! @brief Reads the data out of a given image node @param [in] image 1 of 3 projects or the visual @param [in] imageType identifies the image format desired. @param [out] pBuffer pointer the buffer @param [out] start position in the block to start reading @param [out] count size of desired chunk or buffer size @return number of bytes read */
| 45 | @return number of bytes read |
| 46 | */ |
| 47 | size_t _readImage2DNode( const StructureNode &image, Image2DType imageType, uint8_t *pBuffer, |
| 48 | int64_t start, size_t count ) |
| 49 | { |
| 50 | size_t transferred = 0; |
| 51 | |
| 52 | switch ( imageType ) |
| 53 | { |
| 54 | case ImageNone: |
| 55 | return 0; |
| 56 | |
| 57 | case ImageJPEG: |
| 58 | if ( image.isDefined( "jpegImage" ) ) |
| 59 | { |
| 60 | BlobNode jpegImage( image.get( "jpegImage" ) ); |
| 61 | jpegImage.read( pBuffer, start, count ); |
| 62 | transferred = count; |
| 63 | } |
| 64 | break; |
| 65 | |
| 66 | case ImagePNG: |
| 67 | if ( image.isDefined( "pngImage" ) ) |
| 68 | { |
| 69 | BlobNode pngImage( image.get( "pngImage" ) ); |
| 70 | pngImage.read( pBuffer, start, count ); |
| 71 | transferred = count; |
| 72 | } |
| 73 | break; |
| 74 | |
| 75 | case ImageMaskPNG: |
| 76 | if ( image.isDefined( "imageMask" ) ) |
| 77 | { |
| 78 | BlobNode imageMask( image.get( "imageMask" ) ); |
| 79 | imageMask.read( pBuffer, start, count ); |
| 80 | transferred = count; |
| 81 | } |
| 82 | break; |
| 83 | } |
| 84 | |
| 85 | return transferred; |
| 86 | } |
| 87 | |
| 88 | /*! |
| 89 | @brief This function reads one of the image blobs |
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